Tool.



s. ZIMMERMAN.

TOOL. APPLICATION FILED MAE.15, 1913.

1,076,732. Patented Oct. 28, 1913.

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TOOL.

Specification of Letters latent.

ltaten te d QQ -TZ J 1913' Application filed March 15, 1913. Serial No. 754,612.

To all whom it may concern:

Be it known that I, SAMUEL Zrniinn nn, i

a citizen of the United States, residing at Seneca, in the county of Nemaha and State of Kansas, have invented certain new and useful Improvements in Tools, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to new and useful improvements in tools and more particularly to that class adapted for use by piano tuners in perforating the felt hammers to change the tone of a piano.

The object of this invention is the provision of a tool of this character which comprises a pair of pivotally united members having handles provided at one side of the pivotal point and heads provided upon the other side of the pivotal point, one of said heads being capable of removably supporting a plurality of perforating points, while the other of the said heads is adapted to clamp the felt between the heads, holding the same against movement while being perforated.

Another object of this invention is to improve and simplify devices of this character, rendering them comparatively simple and inexpensive to manufacture, reliable and efliclient in use and readily operated.

With the above and other objects in view, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which Figure 1 is a plan view of one part of the tool; Fig. 2 is a plan view of the other part of the tool; Fig. 3 is a side elevation of the tool.

Referring to the accompanying drawings by similar characters of reference throughout the several views, the numeral. 10 designates generally my improved tool which consists of a pair of rectangular bars 11 and 12, pivotally united at their inner ends as shown at 13. Handles 14 are formed at the ends of the bars 11 and 12 preferably at their pivotal connection 13, the said handles being normally forced outwardly by means of the spring 15, which is riveted or otherwise secured to the inner side of one handle, for engagement with the confronting inner side of the other handle. A similar spring 16 is secured to the "inner side of the bar 12- for engagement with the adjacent sides of the pins 19, for the purpose of forcing the outer ends of said bars apart and the felt from the pins. A head 17 is formed upon the outer end of the bar 12, and orojects equally distant upon the opposite sic es thereof, the said head being formed in its outer edge with a plurality of vertical grooves 18 for the reception of the perforating pins 19.

A removable bar 20 formed with grooves 21 disposed in registration with the grooves 18 is secured to the head 17 by clamping screws 22, and is adapted to cooperate with the outer edge of the head 17 for the purpose of retaining the perforating pins 19 against the displacement from the grooves 18 and 21. A similar head 23 is formed upon the outer end of the bar 11 and is of a size and shape to correspond with the before mentioned head 17. The outer side of the head 23 is provided with a recess 24, while secured to theouter side thereof is a removable end bar 25, retained thereon by clamping screws 26 similar to the before mentioned clamping screws 22. This oar 25 coiiperates with the recess 24 in producing a slot for the reception of the pins 19 when the heads are forced together.

The operation of the device is as follows :-The felt to be perforated and which is indicated by the numeral 27 is inserted between the heads 17 and 23 and the handles 14 are drawn together, which forces the perforating pins 19 through the felt, thus perforating the same in the desired manner.

It should be understood in this connection that various minor changes in the specific details of construction can be resorted to within the scope of the appended claim without departing from or sacrificing any of the advantages of the invention. It should be further understood in this connection that I am not to be limited to the use of the tool in perforating felt for piano hammers, but may use the device in any other connection to which the various parts thereof will adapt themselves.

Having thus fully described this inven tion, what I claim as new and desire to protect by Letters Patent is A tool comprising a pair of pivoted handle bars, handles formed upon said handle bars at one end thereof, heads formed on the other ends of said bars, one of said heads within said slot, as and for the purposb being provided with a recess in its outer face described. 1 10 and intermediate of its ends, an end bar re- In testimony whereof I hereunto aflix my movably connected to the outer face of said signature in the presence of two witnesses.

5 head and adapted to close the recess therein SAMUEL ZIMMERMAN.

to produce a slot between the head and end Witnesses: bar, and a pin removably mounted in the BESS LARIMER, other of the heads and adapted to project JAMES PAECELS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

